Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Properties for sale	$ 52,118	$ 12,649
Properties not available for sale	9,370	2,328
Properties under improvement	24,166	7,717
Inventory	85,654	22,694
Lower of cost or net realizable value write-downs	$ 179	$ 190

Amount of valuation reserve for inventory.

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